Calking gun



E. H. SIEG Jul 15, 1941.

CALKING GUN Filed April 25, 1938 INVENTOR WITNESS ATTO R N EYS PatentedJuly 15, 1941 UNITED. STATE CALKINGGI'INY' v Emil n. s'ieg, West De meis. 7 Application Ami-i125, 193s, ser arnwzog ss j 2.01m. (or. 184.5) VI The invention relates to a pointing or crackfilling tool.

The primary object of this invention is the provision of a gun of thischaracter, wherein the discharge "head thereof carries a tip ofresilient material such as rubber, the latter being open for aribbonfeed of the material carrie'd'within the gun and such tipisseparable for'the substitution of another tip, these being of aparticular shape and design to allowflforcing 'the'material gun will notbe forced out between the header nozzle of the gun and the surfaceagainst which the gun is applied, also to avoid marring of surfaces inthe use of the gun for filling cracks or otherwise.

A further object of the invention is the provision of a gun of thischaracter, which is simple in its construction, thoroughly reliable andeflicacious in operation, readily and easily filled with material,easily cleaned, easy of operation, con-' venient for handling, strong,durable and inexpensive to manufacture.

With these and other objects in view, the invention consists in thefeatures of construction, combination and arrangement of parts as willbe hereinafter more fully described, illustrated in the accompanyingdrawing, which discloses the preferred and modified forms of embodimentof the invention and pointed out in the claims hereunto appended.

In the accompanying drawing:

Figure 1 is a plan view of a gun partly in section constructed inaccordance with the invention.

Figure 2 is a sectional view taken on the line 2-2 of Figure 1 lookingin the direction of the arrows.

Figure 3 is an end elevation.

Figure 4 is a perspective viewof one of the releasable tips.

Figure 5 is a fragmentary vertical longitudinal sectional view throughthe gun showing another spending parts throughoutthe several views inthe'diawing. Referring to the'drawing in detail, the gun constituting,the present invention comprises a cylinder I0, preferably madefrom'metal, being of uniform cross sectional diameter throughout itsextent and open at opposite extreimities' thereof while provided at theextremities'exteriorly thereof are screw threads II for the detachablefastening of a closure cap l2 at 'one extremity uponfsaidcylinder whileat the other, extremity the detachable fastening of a delivery nozzleor, head l3 thereto, the said head or nozzle beinghereinafter fullydescribed.

Operating within the cylinder I0 is a piston V l4, 'equipped with acup-shaped leather, the stem l5 being carried through a clearance l6in'the cap l2, the said clearance being centrally located in the cap andthe outermost end of the stem is fitted with a'hand knob ,I! so that thepiston I4 can be operated for reciprocation within the cylinder ill inthe use'of the gun. The cylinder I0 is filled with caulking orcrack-filling material or substance that is to be dispensed from the unthrough the end of said cylinder carrying the head or nozzle l3, whichis readily removable from the cylinder. The head or nozzle [3 is formedwith a nipple l8 fitted with a gasket l9.

and this nipple is engaged on the cylinder I0 at the threaded extremityof cylinder provided therefor, the gasket being for the purpose ofpreventing leakage at' the connection between the e head or nozzle andthe said cylinder.

The head or nozzle l3 has communication with the cylinder l0 through theopening 20 provided. in the threaded end or the rear wall of said head"or nozzle. This head or nozzle I3 is provided,

said slot or opening 23 in a ribbon-like form and being waved in atransverse direction effective for a zigzag lay with respect to a pieceof work. This has been found essential when filling cracks in plasteredwalls or ceilings which said cracks are mostly of an irregular shape orform.

The opposite side, ends and front walls of the reduced end 22 of thehead or nozzle l3 are fiattened. or straight for the separable fittingwith thisend 22 of a changeable tip 24 or 21 hereinafter fullydescribed.

The changeable tip 24 isin the form of a cupped body made from resilientmaterial such as rubber, the cupped side effects a pocket or recess 25for accommodating the end 22, being similarly shaped thereto, and in thefront wall of the said tip 24 is a slot or opening 26, companion to theslot or opening 23 in the head or nozzle 13. The front wall of the tip24 is straight or flat and similarly the opposite ends and sides of thebody of said tip are fiat or straight. The tip 24 is usable with thehead or nozzle when forcing the material frorrithe guninto cracks orcrevices on the fiat surfaces of walls or ceilings and the tip 21 isusable when forcing the material from the gun into cracks or crevices incorners, such as where the wall joint ceiling and other contractedplaces. The tips, which are made out-of a resilient material such asrubber, act as a gasket be tween the head or nozzle and the surface towhich the same is applied thereby preventing any of the material orsubstance from being forced out at this point and as the material orsubstance is prevented'from being forced out'atthis point it has tog-mmthe crack or crevice as pressure is applied on hand knob H.

Itis desirable or" preferable to have the fiat front of the tip makecontact with the work'and that the slot or opening 26 register closelywith thecrack or other space therein so that the material can,bedeliver'ed intosame when dispensed fromthe gunin the'use thereof. Theresilient characteristic of the body of tips 24 and 2'! prevents marringof 'work in the use of the gun and also prevents the material that isbeing dispensed other 'substanceto be'applied to work by detachingheador nozzle I3 from the cylinder, drawing piston back to the cap I! 'asfar as it will go and filling cylinder at the open end thereof.

The tip 24 serves as an adapter for use with the gun when filling crackson fiat surfaces while the tip 21 serves as an adapter for use with thegun when filling cracks in corners or other contracted places. With heador nozzle l3 and tip 24 or 21 it is possible to cork or fill cracks onany part or section of a wall or ceiling.

When the gun is filled, the inward stroke of the piston dispenses thematerial through the nozzle or head and through the tip fitted therewithand in this manner enabling the filling of vacant spaces, cracks, jointsor the like in the use of the gun. Material to be used for fillingcracked plastered walls is in a fluid or solution state, such as paint,paint and varnish mixed together or wall sizing mixed quite thick orabout the consistency of paint or any other solution that would provesatisfactory for filling cracks in plastered walls, being understood, ofcourse, that the material to be used must be in a fluid or solutionstate or soft so that it can be conveniently dispensed from the cylinderIn of the said gun in the working of .the piston l4. 1

What'is claimed is: r T

1. A calking gun, comprising a cylinder, a fpiston therein, a nozzleremovably'secured to one end of the cylinder and of a flat form havingone wall approximately in a planewith the wall of the cylinder, and abeveled wall forming 'a'reduced oblong discharge end provided" with. aribbon forming discharge slot extending across the same in a plane withthe wall ofthe cylinder.

'2. A calking gun, comprising a cylinder, a piston therein, a nozzle,removably secured to one end of the cylinder and of a flat form havingone wall'approximately in a plane with the wall of the cylinder, abeveled wall forming a reduced oblong discharge end provided with aribbon forming discharge slot extending across the'same in a plane withthe wall of thecylinder, andan elastic nipple frictionally held on theoblong end and having a ribbon forming slot corresponding with the slotin the'nozzle. I

' EMIL H. SIEG.

